Digital Sovereignty2026-10-13T15:05:09+02:00

Your Digital Life Belongs to You

Not to the platform that hosts it.

Digital sovereignty is not a technical concept. It is a principle – that the secrets, credentials, and access that define your digital life should be under your control, on your terms, with no intermediary standing between you and your own data. Seedkeeper is built around that principle, from the hardware up.

  • Pure Self-Custody
  • 100% Open-Source
  • Zero Cloud Dependency

  • Belgian Company
  • GDPR Compliant by Design
  • No Data Collection. Ever.
Seedkeeper Pro - Illustration - Sovereignty in your hand

What Digital Sovereignty Actually Means

Most people have never been asked whether they consent to the architecture of the internet. The default is surveillance – data collected, stored, analysed, and monetised by platforms whose business model depends on knowing as much about you as possible. The default is dependency – your passwords in someone else’s vault, your authentication in someone else’s app, your access contingent on someone else’s server staying online.

Digital sovereignty is the decision to opt out of that default. It means your secrets are stored where only you can reach them. It means the tools you use to protect yourself can be examined, verified, and trusted – not because a company promises they are safe, but because you can read the code yourself. It means your security does not depend on a platform’s goodwill, a provider’s uptime, or a government’s restraint.

It is not paranoia. It is ownership.

Why It Matters More Than Ever

Seedkeeper Pro - Illustration - Data business

Your Data Is Someone Else’s Business Model

Every major platform that stores your data does so because your data has value to someone. The password manager that syncs across your devices, the authenticator app on your phone, the cloud storage that holds your files – these are not neutral tools. They are businesses with investors, legal departments, and an obligation to cooperate with authorities when compelled. Your data lives on their infrastructure, subject to their terms of service, their security practices, and the laws of their jurisdiction.

Seedkeeper Pro - Illustration - Cloud risk

The Cloud Is Someone Else’s Computer

“The cloud” is a convenient abstraction for a simple fact: your data is stored on computers owned by someone else, in data centres located somewhere, operated by staff you have never met, and subject to legal processes you are not informed about. When a cloud service is breached – and they are, regularly – your data is exposed. When a cloud service is subpoenaed – and they are, routinely – your data is handed over. When a cloud service goes offline – and they do, occasionally – your access disappears.

This is not a criticism of any company. It is a structural reality of any system where your data lives on someone else’s hardware.

Self-custody removes this dependency entirely. Your data on your device. No cloud in the middle.

Seedkeeper Pro - Illustration - Open Source

Open-Source Is the Only Proof That Works

Every security product makes promises. Most of them cannot be verified. A closed-source password manager tells you your vault is encrypted – but you cannot read the code that implements that encryption, cannot check for backdoors, cannot verify that the master password is handled the way they claim. You trust the promise, not the proof.

Open-source changes this fundamentally. When the complete source code is published, the security community can read it, audit it, find problems, and report them. Bugs get fixed publicly. Improvements get contributed. The security model is not protected by secrecy – it is strengthened by scrutiny.

Seedkeeper Pro - Illustration - Europe compliant

Jurisdiction Is Not an Abstract Concern

Where a company is incorporated matters. A company subject to US law can be compelled by US authorities to hand over data – including data belonging to users who have never been to the United States. Laws like the CLOUD Act make this possible regardless of where the data is physically stored.

Seedkeeper is incorporated in Belgium, personalized in Belgium, and subject to European law. More importantly – because Seedkeeper operates on a pure self-custody model with zero cloud dependency – there is no data held by the company to hand over.

Seedkeeper’s firmware and companion app are published in full. Anyone can verify exactly what happens to their data. That is not a feature. It is the foundation.

Your secrets exist only on the device in your possession. No jurisdiction can compel access to data that does not exist on any server.

What Self-Custody Looks Like in Practice

Your Secrets Never Leave Your Device

Every password, passkey, seed phrase, and secure note stored in Seedkeeper lives inside the device’s EAL6+ certified secure element – a dedicated chip designed specifically to resist extraction, even with physical access to the hardware. Nothing is synced to a cloud. Nothing is transmitted to a server. Nothing leaves the device unencrypted. Ever. Your secrets are where you put them, accessible only to you, only with your PIN.

No Account. No Login. No Trail.

Using Seedkeeper requires no account. No email address. No phone number. No profile. No registration. The app connects to your device and works – with no data exchanged with any server, no usage tracked, no analytics collected. There is no profile of you in any database, because no database was ever created. You are not a user to be managed. You are a person using a tool.

Code You Can Read. Security You Can Verify.

Seedkeeper’s complete source code – firmware, applet, and companion app – is published on GitHub. Every line of code that touches your data is publicly readable. Security researchers have audited it. Developers have contributed to it. Anyone who wants to verify what Seedkeeper does with their secrets can do so, without trusting our word, without signing an NDA, without waiting for a third-party audit report.

Built in Europe. Governed by European Law.

Seedkeeper is designed, developed, and personalized in Belgium. The company behind it – Satochip – is a Belgian registered entity, subject to European law and GDPR by default. The hardware is assembled by a trusted manufacturing partner and uses NXP secure elements – then code-loaded and personalized entirely in-house in Belgium, where the device’s actual security identity is established.

Seedkeeper and the Cypherpunk Tradition

The cypherpunk movement – which gave the world public key cryptography, PGP, BitTorrent, Bitcoin, and Tor – was built on a single conviction: that privacy is not a privilege to be granted by institutions, but a right to be protected by mathematics and open tools.

“Privacy for the weak, transparency for the powerful” was the principle. Tools that anyone could use, that no authority could disable, that worked by proof rather than promise.

Seedkeeper is not a cypherpunk product in the narrow technical sense. But it is built on cypherpunk values: self-custody over dependency, open-source over trust-me, hardware over cloud, individual control over institutional permission.
The belief that your digital life – your passwords, your passkeys, your recovery phrases, your secrets – should be yours to protect, with tools you can verify, on hardware you can hold.

That is what digital sovereignty means. And it fits in your pocket.

Seedkeeper Pro - Illustration - Cypherpunk

Available on Seedkeeper PRO

Seedkeeper Pro - Card

PRO – Smartcard

  • FIDO2 passkey login + offline TOTP + password manager
  • Works via NFC and smartcard reader
  • From €35
Seedkeeper Pro - Double Ring

PRO – Ring

  • FIDO2 passkey login + offline TOTP + password manager
  • Works over NFC only

  • From €75

Looking for password management without passkeys? Seedkeeper Classic starts at €25.

Frequently Asked Questions

How does open-source code make a product more trustworthy?2026-07-17T14:09:28+02:00

With closed-source software, security is a promise – the company tells you how the product works, and you either believe them or you don’t. With open-source software, security is verifiable – anyone can read the code, check the implementation, look for vulnerabilities, and confirm that the product does exactly what it claims. Seedkeeper’s firmware and companion app are fully open-source and published on GitHub. The security community can audit them. You can read them. The trust comes from transparency, not from our word.

What is self-custody and why does it matter?2026-07-17T14:09:07+02:00

Self-custody means your data is stored on a device you physically control – not on a server owned by a third party. When your passwords, passkeys, and recovery phrases are in self-custody, they cannot be accessed by a cloud provider, cannot be exposed in a third-party data breach, cannot be compelled by a legal process served on someone else’s company, and are not at risk if a service shuts down or changes its terms. The only person who can access self-custodied data is the person holding the device – and knowing the PIN.

What is digital sovereignty?2026-10-05T22:46:48+02:00

Digital sovereignty is the principle that individuals should have full control over their own digital data, credentials, and access – without depending on third-party platforms, cloud providers, or external services to manage, store, or secure that information on their behalf.

In practice, it means choosing tools that keep your data under your direct control, that operate transparently, and that do not create dependencies on companies whose interests may not align with yours.

Is my data subject to US laws like the CLOUD Act?2026-07-17T14:07:54+02:00

No. Seedkeeper Pro operates on a pure self-custody model with no cloud dependency at any point.
Your passkeys, passwords, and TOTP secrets are generated, stored, and used entirely within the device’s secure element – they are never transmitted to, processed by, or stored on any server, in the US or anywhere else.
Laws like the US CLOUD Act apply to data held by companies that can be compelled to hand it over; since Seedkeeper Pro never holds your data in the first place, there’s nothing to compel. Your secrets exist only on the physical device in your possession.

Does Seedkeeper Pro comply with GDPR?2026-07-17T14:08:02+02:00

Yes, Seedkeeper Pro is fully GDPR compliant.
This is made easier by design: because the device operates on a pure self-custody model with no cloud dependency, there’s no central database of user secrets that could be exposed, requested, or mishandled.
Combined with Satochip S.R.L.’s GDPR-aligned data practices for any account or support information collected separately, this gives you both regulatory compliance and a security architecture where there’s structurally very little personal data to protect in the first place.

How does Seedkeeper Pro protect my data?2026-07-17T14:08:09+02:00

Your secrets are stored inside an EAL6+ certified secure element – the same class of certification used in passports and high-security banking hardware, among the highest assurance levels available for consumer hardware.
Private keys are generated and used inside this chip and never leave it in plaintext, even during normal operation.
Seedkeeper Pro is also FIDO2 certified, meaning its passkey implementation has been independently tested against the official FIDO Alliance interoperability and security requirements.
Even with full physical possession of a lost or stolen card, extracting the secrets requires defeating hardware countermeasures specifically designed to resist physical and side-channel extraction attacks.

Take Back Control.
Keep It.

Self-custody. Open-source. Zero cloud. Built in Europe.

Seedkeeper Pro - Products illustrations
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